Escutcheon



(No Model.)

G. R. UHLMANN. B'SGUTGHBON.

No. 532,223. Pat ented Jan. 8, 1895.

Fig.3.

"mi Noams PETERS co. vnoroumm, WASHINGTON, n c.

UNITED STATES CHARLES R. UHLMANN, OF PEORIA, ILLINOIS.

ESCUTCHEON.

v SPECIFICATION forming part of teeers'raent No. 532,223, dated January 8, 1895.

Application filed March 26, 1394. Serial No. 505,091. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES R. UHLMANN,

a citizen of the United States, residing at Peoria, in the county of Peoriaand State of Illinois, have invented certain new and useful Improvements in Escutcheons; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in escutcheons.

The object of the invention is to provide an escutcheon with means to prevent a door being opened either by the turning of the knob or by the picking of the lock.

In the drawings herewith, Figure 1 represents a rear view of an escutcheon showing a plate in two positions as swinging on its pivot. Fig. 2 is also a rear view of the escutcheon shown in Fig. 1 with the plate removed. Fig. 3 is a view of the plate used in the escutcheon showing its construction. Fig. 4 is a sectional end view of the escutcheon plate through line a: a: Fig. 2. Fig. 5 is arear view of an escutcheon, partly broken away, showing the locking of the knob and the k y at the same time. Fig. 6 is a rear view of an escutcheon showing a modified form of construction.

A in the several figures represents the body of the escutcheon with a flange or wall around its edges to form an inclosure for the working parts.

B represents a locking plate preferably of sheet metal which has a pivotal connection with the plateA by a post G on the said plate. AtD is also a post secured to the plate A which is used as a guide and for holding and steadying the plate in its movements.

The locking plate B is perforated at O and Dwith holes slightlylarger than the diameter of the posts 0 and D, which open into smaller perforations O and D respectively, having a narrow neck between the holes smaller than the said holes or perforations O and D The said posts 0 and D are undercut as at D in Fig. 4 leaving the head as shown. The method of placing the plate B in position may now be understood. The posts G and D are let through the holes 0 and D respectively in the said plate B and the plate is then forced downward and thus allowing the posts to enter the smaller holes 0 and D which just fit the necks of the posts and the heads of said posts retain the plate in its position and a slot D is out in the plate B at one side of the post D to allow the plate to swing on the pivot formed by the post 0.

A holeE is cut in the plateB for the introduction and operation of the knob-rod E. The said hole E is filed away at one side to form the triangular indentation at F in the several figures; the purpose of which will be hereinafter described.

The plate B extends downward past the keyhole E and an opening E is made in the said plate to correspond with the said key-hole and a slot E is cut in the plate at the side of the hole E to engage the key E The upper portion of the plate B terminates in a tongue B which communicates with a horizontal slot I in the escutcheon by a knob I which reaches through the slot to the front face of the device, and which is moved by the hand. A slot G is also out in the escutcheon plate preferably at right angles to the slot I and a knob H engages therewith.

The object of the invention being known the operation may be understood from the followingz-In Fig. 1 the plate is shown in solid lines engaging a key while the doorknob may be turned without trouble, but if new the knob H be raised and the plate thrown to the left, as shown by dotted lines (and the knob H allowed to drop to hold it inv place) the key-hole will be free and the knob-rod engaged so that it'cannot possibly be turned.

Fig. 5 shows the parts as hereinbefore described, but showing the triangular indenture F on the opposite side of the hole to that shown in Figs. 1 and 3 and which has the effect of locking the key and the knob simultaneously as shown in solid lines. By looking the knob the bolt is held against being drawn into the look.

In Fig. 6 is a modified form of the invention and in which the plate B is cut 'away atone side and is replaced by a catch J having a notch K as shown and which catch is pivoted near its upper extremity to the plate B at K and a wedge L hangs in a vertical slot N in the plate B bya pin M so that when the wedge is let downward it occupies the space between the said catch J and the wall of the escutcheon plate.

When the wedge is raised the knob rod E may be readily turned; the catch J giving at every movement. This forms a very simple, efficient device for the purpose. Therefore the knob islocked perfectly. When the catch is raised as shown in dotted lines, the knob is entirely free. The wedge may be retained in its upper position by any good means and when lowering, the catch falls into place very readily. By this construction the key-hole may be opened and closed at will without the knob being interferred with in any way. At the same time the knob may be engaged independently of the remainder of the device. By these means herein described any door may be provided with a cheap and efficient device which cannot be tampered with from the outside. This device may also be placed with a lock without trouble.

Having described my invention at length, what I now claim, and desire to secure by Letters Patent, is

1. An escutcheon having means for locking the knob spindle and key simultaneously or separately and consisting of a locking plate B pivotally secured within the escutcheon and having a slot at its lower end for engagement with the key E, the upper extremity of said plate terminating in a tongue B carrying a knob I for engagement with a slot 1' in the escutcheon, a knob H adapted to slide in the slot G of the escutcheon to engage the said tongue B, a catch J pivotally secured on the escutcheon and adapted to engage and hold the knob spindle against being turned, and a eon and having a sliding connection therewith and adapted to look the catch J and the knob-rod E substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES R. UHLM ANN. Witnesses:

O. JOHNSON, A. KEITHLEY. 

